Planar vacancies in Sn1-xBixTe nanoribbons

Zou, Yi-Chao, Chen, Zhi-Gang, Kong, Fantai, Lin, Jing, Drennan, John, Cho, Kyeongjae, Wang, Zhongchang and Zou, Jin (2016) Planar vacancies in Sn1-xBixTe nanoribbons. ACS Nano, 10 5: 5507-5515. doi:10.1021/acsnano.6b01953

Author Zou, Yi-Chao
Chen, Zhi-Gang
Kong, Fantai
Lin, Jing
Drennan, John
Cho, Kyeongjae
Wang, Zhongchang
Zou, Jin
Title Planar vacancies in Sn1-xBixTe nanoribbons
Formatted title
Planar vacancies in Sn1-xBixTe nanoribbons
Journal name ACS Nano   Check publisher's open access policy
ISSN 1936-086X
Publication date 2016-05-24
Year available 2016
Sub-type Article (original research)
DOI 10.1021/acsnano.6b01953
Open Access Status Not yet assessed
Volume 10
Issue 5
Start page 5507
End page 5515
Total pages 9
Place of publication Washington, DC, United States
Publisher American Chemical Society
Collection year 2017
Language eng
Formatted abstract
Vacancy engineering is a crucial approach to manipulate physical properties of semiconductors. Here, we demonstrate that planar vacancies are formed in Sn1-xBixTe nanoribbons by using Bi dopants via a facile chemical vapor deposition. Through combination of sub-angstrom-resolution imaging and density functional theory calculations, these planar vacancies are found to be associated with Bi segregations, which significantly lower their formation energies. The planar vacancies exhibit polymorphic structures with local variations in the lattice relaxation level, determined by their proximity to the nanoribbon surface. Such polymorphic planar vacancies, in conjunction with Bi dopants, trigger distinct localized electronic states, offering platforms for device applications of ternary chalcogenide materials.
Keyword Chalcogenides
Density functional theory
Scanning transmission electron microscopy
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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Centre for Microscopy and Microanalysis Publications
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